P a t f nt o f fic f



fJune 17, 1930. w, W, LANDSlEDEL 1,765,340

ADJUSTABLE CONTROL CAM Filed oct. 1, 1927 ma, @Maz/umaz Patented June17, 1930 Unirse STATES- WALTER W. LANDSIEDEL, OF CINCINNATI, OHIO,ASSIGNOE TO REMINGTON RAND rarest 'sferica ING., OF BUFFALO, NEW YORK,A. CORPORATION 0F v:DIEIIJAVVAIEtIEl .ADJUSTABLE CONTROL vCAMEAppncation filed october v1, 19a?. serial No. 223,438.

; of a control cam which can be readily adjusted on its cam bar.

Another object is the provision of a readily adjustable control cam forclosely spacedrectangular cam bars.

Another object is to provide an adjustable control cam which is simplein design and inexpensive to manufacture.

Other objects and advantages will appear from the description taken inconnection with the drawings in which Fig. 1 is a side view of a'control cam.

Fig. 2 is an end view of a control cam.

Fig. 3 shows a control cam assembled on a cam bar.

Fig. 4 is a diagrammatic view of an assembly of cam bars and a possiblearrangement of the control cams.

The control cam 10 comprises a main body' bent laterally as at 12 andthendownwardly to provide a portion 13 which together with the upperportion of the main body of the cam forms a U in which is housed aspring 14 suitably anchoredy on a stud riveted in the main body andprojecting loosely through the portion 18.

As shown in Fig. 3, the control cam is mounted on a bar 15, the upperedge of which lies within the U by means of which the cam is locked tothe bar against removal laterally of the bar. The ends of the spring 14bear on the upper edge of the bar and constantly urge the cam upwardlyfora purpose about to be disclosed.

The lower end lof the control caml is held against removal laterally ofthe bar by a laterally Aoffset tongue 16 on a plate 17 spot welded orotherwise rigidly secured to the lower portion ofthe'niain body of thecam.- The lower edge lof theplate 17 is provided with wedge surfaces ofthe same inclination as the surfaces 11 and which in eii'ect lconstitutea continuation thereof, thereby providing afairly wide bearing. In thisway, the eXtra width added to the camis located und-er thegcam bar,thereby not interfering with the -clo'se spacing of the cam bars, (seeFig. 4).

The upper ed-ge 'of the plate 17'is provided with teeth 20, (Fig. 1),cooperating las shown in FigJS with teet'h' 21 on the lower edge of thecam bar 15. As is obvious fromfFig. the control cam 10 is held in itsadjusted position 'on the bar by the teeth 2O and 21 which are heldinter-engaged by the spring 14. The camy can be moved into any otherposition after freeing it from the teeth by downward pressure on the camapplied by the hand or any suitable means. Upon release of the pressure,the teeth 2O will bedrawn into engagement with the teeth 21 by thespring 14 to' hold'the camsecurely in its new position of adjustment. y

It is obvious that by increasing the number of teeth per inch on thecontrol cam and the cam bar, a relatively fin-e .adjustment ofy thel camon the bar can be made if necessary. As seen in Fig. 3, the upper edgeof the plate 17 has a long bearing on lthe lower edge of 'the Cain-bar15 which provides a 'safeguard against tilting movement of the controlcam about an axis transverse of the bar. This is' also augmented by thespaced bearino ends of the spring 14.

t is apparent from F ig. 4 that the bars 15 may be closely spaced if.desired, in fact, so close that adjacentV cams of adjacent bars may beplaced in actual contact with eachother, or cams on one bar may contactwith *.fadjace-nt bars. This is madev possible because of the generalconstruction of the cam embodying a relatively large body por-y portionhaving one of its sides bentback upon itself to form a U adapted toembrace a cam bar, and a spring stud anchored in said main body portionand projecting into said bent back portion.

2. A control cam comprising a main body portion having one of its sidesbent back upon itself to form a U adapted to embrace a cam bar, a springstud anchored in said Vmain body portion and projecting into said bentback portion, and a spring anchored on said stud and having spaced freeendbearing pOrtions.

3. A control cam comprising a main body portion having one of its edgesbent back upon itself to Jform a U and its other edge constitnting avcam, and a rack member secured against one side of said main bodyportion and lying in the plane of the opening of the U.

4. A control cam comprising a main body portion, a rack engaging membersecured againstfone side of the main body portion, and a laterallyoifset guide lip on said rack engaging member. V

5. A control cam comprising a main body portion,.one edge of which isbent back to form a Ushaped channel to receive one edge of a cam bar, acam bar engaging plate secured to the opposite edge of the main bodyportion, and an oifset portion on said plater vforming a U-shapedchannel with the main body portion to lreceive the opposite edge oi' thecam bar.

6. A control cam comprising a main body portion, one edge of Which isbent back to form a U-shaped channel to receive one edge oil a cam bar,a plate secured to the opposite edge of the main body portion andadapted to bear against the opposite edge of the bar, an oset portion onsaid plate adapted to bear against the side of the bar, and a springWithin said U-shaped channel adapted to bear against the first mentionededge of the bar.

7. A control cam comprising a main body portion adapted to have one ofits sides contact with the side of a cam bar, and a cam member securedto said side of the main llgody portion to lie in the plane of said cam8. Acontrol cam comprising a main body portion adapted to have one ofits sides contact with the side of a cam bar, and having one-of itsedges provided With cam surfaces,

and a plate secured to said side o the main body portion and providedWith cam surfaces in the same planes as said cam surfaces on the controlcam. VALTER WM. I n'NDSIEDliL.

